peak-to-peak value

2.18  peak-to-peak value. Algebraic difference between extremes of an oscillating quantity.

infrasonic frequency

2.17  infrasonic frequency. Frequency less than 20 Hz, the nominal lower range of human hearing. Unit, hertz (Hz). Annotation 1          The term “infrasonic” may be used to indicate a device or system...

ultrasonic frequency

2.16  ultrasonic frequency. Frequency greater than 20 kHz, the nominal upper range of human hearing. Unit, hertz (Hz). Annotation              The term “ultrasonic” may be used as a...

audio frequency

2.15  audio frequency. Frequency of a sound wave nominally audible to humans. Unit, hertz (Hz). Annotation 1          Audio frequencies range roughly from 15 Hz to 20 kHz. Annotation...

angular frequency

2.14  angular frequency. Frequency multiplied by 2π. Unit, radian per second; symbol,...